iOS 11.4.1 (build 15G77) is an official Apple over-the-air update for the iPhone 8 Plus (GSM), released on 2018-07-09T17:09:24Z. The update package is 760.94 MB. This is a delta (partial) update that requires 11.2.6 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 39c97eea93cbbfe6bd6c7862ffe367dc33ca003c.zip.